I didn't own it per se, but a job I had saddled us with Nextel walkie-talkie phones on belt clips, had to be available day and night. It was big and heavy and startling, like wearing a monkey on your hip that sometimes chattered at you when you were sleeping or doing other things, and I can't count how many times I whanged it into something because it was so huge and stuck out so far from my waist. It didn't do anything except be a poor-quality phone and annoy the crap out of me, but I still had to carry it everywhere. At least these days if a job staples a BES to you it's a little better than this monstrosity.
It's a cactus!